[muawiyah]

Since "Arthur" is more correctly rendered as "Ad" in the Celtic language current at the time (540 AD or thereabouts), the relationships are much closer to Bouadica than anyone else.

Now, over that, the close approach of a comet would pretty well explain why the death rate in France was much higher than in Italy, Spain or Brittain.

[bcsco]

"Now, over that, the close approach of a comet would pretty well explain why the death rate in France was much higher than in Italy, Spain or Brittain."

Hmmmm. Or else the French couldn't find enough white flags fast enough.

[blam]

Another twist:

(Prince) Madoc In America

[RegulatorCountry]

I'm recalling a written account, not certain of source but I'll look for it, regarding what had to be a near-miss by an asteroid. It was described as being "awesome in its blackness" and the noise was cause for great fear, as if the very "firmament" was being ripped away. This was in archaic English, but it could have been from the years immediately preceding the Black Death, in the 12th century.